would
Pronunciation: /wʊd, wəd/
modal verb ( 3rd singular present would)
- 1past of will1, in various senses he said he would be away for a couple of days she wouldn’t leave the windows would not close
- 2(expressing the conditional mood) indicating the consequence of an imagined event or situation: he would lose his job if he were identified
- (I would) used to give advice: I wouldn’t drink that if I were you
- 4expressing a polite request: would you pour the wine, please?
- expressing willingness or consent: who would live here?
- 5expressing a conjecture, opinion, or hope: I would imagine that they’re home by now I guess some people would consider it brutal I would have to agree

Origin:
Old English wolde, past of wyllan (see will1)

On the differences in use between would and should, see should (usage)For a discussion of the use of would of instead of would have, see have (usage).